49661-72-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 49661-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,6 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 49661-72:
(7*4)+(6*9)+(5*6)+(4*6)+(3*1)+(2*7)+(1*2)=155
155 % 10 = 5
So 49661-72-5 is a valid CAS Registry Number.
49661-72-5Relevant academic research and scientific papers
Carbon and oxygen analogs of penicillin
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, (2008/06/13)
In accordance with this invention, it has been found that carbon and oxygen analogs of 6β-aminopenicillanic acid and biologically active derivatives thereof can be formed from esters of 6-oxopenicillanic acid. For example, 6β-phenoxyacetoxypenicillanic ac
